Blood flow restriction exercise strap

ABSTRACT

A blood flow restriction (BFR) exercise strap. The strap is configured with a coupling at a first end of an elastic band. A second free end of the band is releasably retained in the coupling by a lever arm that is biased in a closed configuration against a plurality of teeth carried on an interior surface of the base. The band has graduated indicia carried thereon for determining a constriction level applied by the band to a limb of the user. The graduated indicia allow the user to set a desired level of constriction on each of a left limb and a right limb to provide the user to develop bilateral symmetry of targeted muscle groups of the limbs.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of priority of U.S. provisional application No. 62/555,868, filed Sep. 8, 2017, the contents of which are herein incorporated by reference. This application is also a continuation of U.S. Design application Ser. No. 29/631,433, filed Dec. 29, 2017, the contents of which are herein incorporated by reference.

BACKGROUND OF THE INVENTION

The present invention relates to exercise equipment, and more particularly to equipment for blood flow restriction exercise regimens.

Blood flow restriction (BFR) exercise regimens involve a band that is tightened around a limb to at least partially occlude the blood flow to a targeted muscle group. They are a form of exercises intended to sculpt the targeted muscle groups.

Existing BFR straps are difficult for the user to apply to obtain an even constriction between their limbs to achieve the desired bilateral symmetry in the development of the targeted muscle groups. While the BFR straps are fairly easy for the user to apply to their legs, existing BFR straps are difficult to apply by the user in a single handed operation. Likewise, the BFR straps are difficult to remove in a single handed operation when the user has completed an exercise.

As can be seen, there is a need for an apparatus and method for BFR exercise regimens.

SUMMARY OF THE INVENTION

In one aspect of the present invention, a blood flow restriction (BFR) exercise strap is disclosed. The BFR exercise strap includes a coupling having a base and a left and a right sidewall extending upwardly from opposite sides of the base. A slot is laterally disposed at an interior end of the base between the left and the right sidewall. A lever arm is pivotally disposed between the left and the right sidewall. A resilient elastic band has a first end and a second end. A first end is attached to the coupling via the slot and the second end is adapted to be received through an exterior end of the coupling and be secured by the lever arm.

In some embodiments, a torsion spring is configured to bias the lever arm in a closed position. A plurality of teeth may be defined in the base at an intermediate portion thereof, such that the lever arm is configured to urge the band against the plurality of teeth to retain the band within the coupling.

A journaled hole may be defined at an intermediate portion of the left and the right sidewall. A barrel at an end of the lever arm has a pivot pin that protrudes from a left and a right end of the barrel. The pivot pin is received in the journaled hole.

In some embodiments, a pin extends inwardly from at least one of the left and the right sidewall. A first arm of the torsion spring is urged in abutment with the pin and a second arm of the torsion spring urged in abutment with a juncture of the at least one of the left and the right sidewall and the base. A loop of the torsion spring may be carried on the pivot pin.

In preferred embodiments of the invention, graduated indicia are carried on at least one surface of the band. The graduated indicia provide a visual reference of a constriction of the band when applied to a limb of a user.

A patch of a hook material may be applied to the second end of the band and a corresponding patch of pile material may be applied to an intermediate portion of the band.

In other aspects of the invention, a coupling for a blood flow restriction (BFR) exercise strap is disclosed. The coupling includes a base with a left and a right sidewall extend upwardly from opposed sides of the base. A slot may be defined across an interior end of the base between the left and the right sidewall. A plurality of teeth are disposed on an intermediate portion of the base between the left and the right sidewall. A lever arm is pivotally disposed between the left and the right sidewall. A torsion spring biases the lever arm in a closed position against the base.

In some embodiments, a pin extends inwardly from at least one of the left and the right sidewall. A first arm of the torsion spring is urged in abutment with the pin, while a second arm of the torsion spring urged in abutment with a juncture of the at least one of the left and the right sidewall and the base.

A journaled hole may be defined at an intermediate portion of the left and the right sidewall. A barrel at an end of the lever arm having a pivot pin protruding from a left and a right end of the barrel, wherein the pivot pin is received in the journaled hole. A loop of the torsion spring may be carried on the pivot pin.

These and other features, aspects and advantages of the present invention will become better understood with reference to the following drawings, description and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the invention in use.

FIG. 2 is a plan view of the strap and buckle of the invention.

FIG. 3 is a perspective view of the base unit of the invention.

FIG. 4 is a perspective view of the buckle unit of the invention.

FIG. 5 is a cross-sectional view taken on line 5-5 of FIG. 1.

FIG. 6 is a cross-sectional view taken on line 6-6 of FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.

Broadly, embodiments of the present invention an elastic strap and a coupling to allow an user to readily apply and release a strap to their limbs when conducting blood flow restriction (BFR) exercise regimens.

As seen in reference to FIG. 1, a BFR strap 10 is applied to the wearer's limbs to at least partially occlude blood flow to the limb while exercising. The BFR strap includes a band 14 formed of a resilient elastic material having a length to circumscribe a selected location on a wearer's limbs 11, such as the biceps and triceps of the upper arm, muscle groups of the upper legs, or even the lower legs.

As seen in reference to FIG. 2, the BFR strap 10 has a first end with a coupling 12 attached, such as via a stitch, to secure the coupling to the band 14. The strap 10 has a second, free end that is routed through the coupling 12 to secure the strap 10 about the user's limb 11.

The BFR strap 10 may also include a hook and pile fastener 18 to secure the free end of the band 14 when applied to the user's limb 11. A patch of a loop material 18 a may be positioned along the band 14 intermediate the first end and the second end. A cooperating patch of hook material 18 b may be applied to the free end of the band 14.

At least an exterior surface of the band 14 may carry graduated indicia 20 designating a tightness or constriction level of the BFR strap 10 when it is applied to the user's limb 11. For BFR training regimens, it is desirable to obtain bilateral symmetry in the development of the targeted muscle groups. With the graduated indicia 20, the user can ensure that an even constriction level is achieved between a left limb 11 and a right limb.

As seen in reference to FIGS. 3-5, the coupling 12 includes a base 12 a formed as a substantially flat plate. A left and a right sidewall 12 b protrude upwardly from the base 12 a. A slot 12 c is defined at an inner end of the base 12 a interposed between the left and the right sidewall 12 b. A plurality of teeth, or ridges 12 d protrude along an intermediate portion of the base 12 a between the left and right sidewalls 12 b. A journal hole 12 e is defined at an upper end of the left and the right sidewalls 12 b at an intermediate portion thereof. The journaled holes 12 e are dimensioned to pivotally attach a lever 16 to the coupling 12. A stop 12 f, or pin, protrudes inwardly along an upper edge of at least one of the left and the right sidewalls 12 b.

The lever 16 may include a lever arm 16 a extending from a lever barrel 16 b. The lever 16 is biased in a closed, strap engaging position via a torsion spring 16 c. As best seen in reference to FIGS. 5 and 6, a first leg 16 d of the torsion spring 16 c has a length to engage with the pin 12 f. A loop of the torsion spring 16 c may be carried by a pivot shaft 16 e extending from the ends of the barrel 16 b. The pivot shaft 16 e is received in the journaled holes 12 e. A second leg 16 f of the torsion spring 16 c is retained along the junction of the base 12 a and one of the left or the right sidewalls 12 b.

As best seen in reference to FIG. 4, the first end of the band 14 is received through the slot 12 c and may be formed in a loop and secured to an inner portion of the band 14 via a stitch.

Referring again to FIG. 5, in use the band 14 is routed through the coupling 16 by passing the free end of the band 14 through an outer end of the coupling 16 and between the base 12 a, the left and the right sidewalls 12 b, and beneath the barrel 16 b and lever arm 16 a. As indicated, the torsion spring 16 c biases the lever arm 16 to the closed position to urge the band 14 against the teeth 12 d.

The BFR strap 10 may initially be formed in a loop and positioned at the desired location to encircle the user's limb 11. Once positioned, the user may pull on the free end of the band 14 to cinch the loop about the user's limb 11. When the user obtains the desired constriction, they would note the mark of the graduated indicia 20 at the interior end of the coupling 16 so that they can apply the BFR strap 10 to their other limb 11 to the desired tightness. The patch 18 b may then be secured to the pile portion 18 a to secure the free end of the band 14.

To release the BFR strap 10 the user simply releases the patch 18 b from the pile portion 18 a and lifts the band 14 so that the lever arm 16 a is urged upwardly. The elasticity of the band 14 allows the user to release the tension of the band 14 and allow the band 14 to be retracted through the coupling 16. As will be appreciated from the foregoing disclosure, the BFR strap 10 of the present invention allows for single handed operation for application and removal of the BFR strap 10, while providing graduated indicia for obtaining a desired constriction, providing better symmetry in the development of the targeted muscle groups.

It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims. 

What is claimed is:
 1. A blood flow restriction (BFR) exercise strap, comprising: a coupling having a base, a left and a right sidewall extending upwardly from opposite sides of the base, a slot laterally disposed at an interior end of the base between the left and the right sidewall, a lever arm pivotally disposed between the left and the right sidewall; and a resilient elastic band having a first end and a second end, wherein the first end is attached to the coupling via the slot and the second end is adapted to be received through an exterior end of the coupling and be secured by the lever arm.
 2. The BFR exercise strap of claim 1, further comprising: a torsion spring configured to bias the lever arm in a closed position.
 3. The BFR exercise strap of claim 1, further comprising: a plurality of teeth defined in the base at an intermediate portion thereof, wherein the lever arm is configured to urge the band against the plurality of teeth to retain the band within the coupling.
 4. The BFR exercise strap of claim 2, further comprising: a journaled hole defined at an intermediate portion of the left and the right sidewall; and a barrel at an end of the lever arm having a pivot pin protruding from a left and a right end of the barrel, wherein the pivot pin is received in the journaled hole.
 5. The BFR exercise strap of claim 4, further comprising; a pin extending inwardly from at least one of the left and the right sidewall; a first arm of the torsion spring urged in abutment with the pin; and a second arm of the torsion spring urged in abutment with a juncture of the at least one of the left and the right sidewall and the base.
 6. The BFR exercise strap of claim 5, wherein a loop of the torsion spring is carried on the pivot pin.
 7. The BFR exercise strap of claim 1, further comprising: graduated indicia carried on at least one surface of the band, the graduated indicia providing a visual reference of a constriction of the band when applied to a limb of a user.
 8. The BFR exercise strap of claim 7, further comprising: a patch of a hook material applied to the second end of the band; and a corresponding patch of pile material applied to an intermediate portion of the band.
 9. A coupling for a blood flow restriction (BFR) exercise strap, comprising: a base, a left and a right sidewall extending upwardly from opposed sides of the base; a slot defined across an interior end of the base between the left and the right sidewall; a plurality of teeth disposed on an intermediate portion of the base between the left and the right sidewall; a lever arm pivotally disposed between the left and the right sidewall; and a torsion spring to bias the lever arm in a closed position against the base.
 10. The coupling of claim 9, further comprising: a pin extending inwardly from at least one of the left and the right sidewall; a first arm of the torsion spring urged in abutment with the pin; and a second arm of the torsion spring urged in abutment with a juncture of the at least one of the left and the right sidewall and the base.
 11. The coupling of claim 10, further comprising: a journaled hole defined at an intermediate portion of the left and the right sidewall; and a barrel at an end of the lever arm having a pivot pin protruding from a left and a right end of the barrel, wherein the pivot pin is received in the journaled hole.
 12. The coupling of claim 11, wherein a loop of the torsion spring is carried on the pivot pin. 